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Yep you probably have more valves.
Try turning the flow controls all the way off. Then turn the water supply back on. Now open the flow controls one at a time. Don't go to the second valve until the first valve shuts off.
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Do the solenoids have plungers in them? Are the solenoids turned all the way clockwise and snug?
Yep a picture would help.

I cleaned all the valve bodies that I could find. Checked voltage to each solenoid. They all checked out. Then I disconnected all the wires from the control box and manually turned all the valves off. Turned the water back on and they all started blowing. I could only find 4 valve boxes. And there were 12 wires plugged into the controller. Is it possible there are more valve boxes that I haven't found yet?

All zones operate all the time

We just purchased a new home with a Nelson Smartzone ez controller. Here is my problem. When
I turn the water on to the system, All the zones run at once and will not shut off unless I turn the water off from the street. Even of I turn the valves off manually. Also as soon as I turn the control box to auto it starts counting down. No matter what time I have it set to start. So what do I start fixing first??? Thank you in advance